09-15-2009
Quote:
Originally Posted by
Codesearcher
Hi All,
I have 1000's of xml files in the Windows environment which needs to be FTPed to the UNIX environment.
to reduce the time taken i go in for Tar and gzip
1. At the windows server i use the following command to tar and gzip
tar --remove-files -pcf DW_BankDrop.tar DW_BankDrop*.xml
gzip -r9 DW_BankDrop.tar
This yields me a file DW_BankDrop.tar.gz
2. I FTP this .tar.gz file to the UNIX environment and perform
chmod 777 Pathname/DW_BankDrop.tar.gz
gunzip Pathname/DW_BankDrop.tar.gz
tar pxvf Pathname/DW_BankDrop.tar
this commands unzips and untars the files but the permission of untarred file becomes 666... Is it possible to retain the same 777 permission which was given for the .tar.gz file earlier in this command(chmod 777 Pathname/DW_*.gz)?
What on earth for? The executable bit is pointless on anything but directories, scripts, and executables. The 666 permissions you already have mean "read/write access for everyone". And I do mean
everyone. You might want to check your umask...
Quote:
another question: Is it possible to delete the .tar file once its being untarred in the same command? (like --remove-files in case of windows environment)
Not that I can see. tar treats the archive file as a stream, not a file, so doesn't have options like that. Not a big deal, just 'rm filename' to delete it after.
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TAR(1) General Commands Manual TAR(1)
NAME
tar - archiver
SYNOPSIS
tar key [ file ... ]
DESCRIPTION
Tar saves and restores file trees. It is most often used to transport a tree of files from one system to another. The key is a string
that contains at most one function letter plus optional modifiers. Other arguments to the command are names of files or directories to be
dumped or restored. A directory name implies all the contained files and subdirectories (recursively).
The function is one of the following letters:
c Create a new archive with the given files as contents.
x Extract the named files from the archive. If a file is a directory, the directory is extracted recursively. Modes are restored if
possible. If no file argument is given, extract the entire archive. If the archive contains multiple entries for a file, the lat-
est one wins.
t List all occurrences of each file in the archive, or of all files if there are no file arguments.
r The named files are appended to the archive.
The modifiers are:
v (verbose) Print the name of each file treated preceded by the function letter. With t, give more details about the archive entries.
f Use the next argument as the name of the archive instead of the default standard input (for keys x and t) or standard output (for
keys c and r).
u Use the next (numeric) argument as the user id for files in the output archive. This is only useful when moving files to a non-Plan
9 system.
g Use the next (numeric) argument as the group id for files in the output archive.
EXAMPLES
Tar can be used to copy hierarchies thus:
{cd fromdir; tar c .} | {cd todir; tar x}
SOURCE
/sys/src/cmd/tar.c
SEE ALSO
ar(1), bundle(1), tapefs(1)
BUGS
There is no way to ask for any but the last occurrence of a file.
File path names are limited to 100 characters.
The tar format allows specification of links and symbolic links, concepts foreign to Plan 9: they are ignored.
TAR(1)